If you think you can do it, you can.
You never know what motivates you.
Problems are not stop signs, they are guidelines.
Things do not happen. Things are made to happen.
Wherever you are - be all there.
Never complain and never explain.
Be kind whenever possible. It is always possible.
The most effective way to do it, is to do it.
Either you run the day or the day runs you.
If you're going through hell, keep going.
Science is wonderfully equipped to answer the question 'How?' but it gets terribly confused when you ask the question 'Why?'